Question

multiply and write answer in simple form 5 root 7 into 2 root 7​

Answer 1

Hey mate
Here is your answer :--

5√7 × 2√7
= 5×2 × √7×√7
= 10 × 7
= 70

Hope this help you mate

Answer 2

$5 \sqrt{7} \times 2 \sqrt{7} \\ \\ 10 \times 7 \\ \\ 70$

this is the answer I hope it will help you